Depth of field adapter



FIG. 1 is a top perspective view of a depth of field adapter;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken line showing of a top mount, an adjustment knob, bayonet holder mounts, and threading are included for the purpose of illustrating environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for a depth of field adapter, as shown and described. 